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A framework for flow time measured by Doppler ultrasound.
Ultrasound J
January 2025
Health Sciences North Research Institute, Sudbury, ON, Canada.
The duration of mechanical systole-also termed the flow time (FT) or left ventricular ejection time (LVET)-is measured by Doppler ultrasound and increasingly used as a stroke volume (SV) surrogate to guide patient care. Nevertheless, confusion exists as to the determinants of FT and a critical evaluation of this measure is needed. Using Doppler ultrasound of the left ventricular outflow tract velocity time integral (LVOT VTI) as well as strain and strain rate echocardiography as grounding principles, this brief commentary offers a model for the independent influences of FT.
View Article and Find Full Text PDFBat Viral Shedding: A Review of Seasonal Patterns and Risk Factors.
Vector Borne Zoonotic Dis
January 2025
Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
Bats act as reservoirs for a variety of zoonotic viruses, sometimes leading to spillover into humans and potential risks of global transmission. Viral shedding from bats is an essential prerequisite to bat-to-human viral transmission and understanding the timing and intensity of viral shedding from bats is critical to mitigate spillover risks. However, there are limited investigations on bats' seasonal viral shedding patterns and their related risk factors.
View Article and Find Full Text PDFPost-exercise neural plasticity is augmented by adding blood flow restriction during low work rate arm cycling.
Exp Physiol
January 2025
Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Perth, Australia.
Blood flow restriction (BFR) combined with low work rate exercise can enhance muscular and cardiovascular fitness. However, whether neural mechanisms mediate these enhancements remains unknown. This study examined changes in corticospinal excitability and motor cortical inhibition following arm cycle ergometry with and without BFR.
View Article and Find Full Text PDFGlucagon-Like Peptide-1 Receptor Agonists in Patients With Durable Left Ventricular Assist Devices.
Artif Organs
January 2025
Division of Cardiology, Department of Medicine, Columbia University College of Physicians and Surgeons and NewYork-Presbyterian Hospital, New York, New York, USA.
Background: GLP-1 RAs improve cardiometabolic outcomes in obese, diabetic, and heart failure patients. Data on the safety and efficacy of GLP-1 RA in advanced heart failure with durable LVAD is limited.
Objectives: To assess the safety and efficacy of GLP-1 RA in durable LVAD patients.
Prevalence of some cardiovascular risk factors: obesity, hypertension, and smoking among medical students.
Crit Pathw Cardiol
January 2025
Internal Medicine Department, College of Medicine, King Faisal University, Alhasa, Saudi Arabia.
Introduction: Cardiovascular diseases (CVDs) are the principal cause of worldwide mortality, with 17.9 million deaths reported in 2019. In Saudi Arabia, CVDs account for 42% of all deaths, occurring on average 10 years earlier than in Western populations.
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